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Old 26th June 2008, 19:16   #76
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Try an expansion chamber after the headers, will surely boost torque and that should translate into better low-end grunt.
Oh! BTW by the above i meant headers then expansion chamber then intermediate pipes then muffler.
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Old 26th June 2008, 19:37   #77
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One more solution guaranteed to work and wouldnt cost much at all, over size the throttle body venturi by giving it a nice port job and then a shining polish work.

If you have money to put in, get yourself a bigger throttlebody itself and follow the other instructions I have stated earlier like Fuel pressure regulator and heat shielding your filter. You should be more than happy with this!!!
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Old 26th June 2008, 20:06   #78
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One more solution guaranteed to work and wouldnt cost much at all, over size the throttle body venturi by giving it a nice port job and then a shining polish work.

If you have money to put in, get yourself a bigger throttlebody itself and follow the other instructions I have stated earlier like Fuel pressure regulator and heat shielding your filter. You should be more than happy with this!!!
Alright, I am not fully aware of all what you said, but you have given me enough food for thought.
Thnks,
TG.
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Old 26th June 2008, 20:07   #79
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One more solution guaranteed to work and wouldnt cost much at all, over size the throttle body venturi by giving it a nice port job and then a shining polish work.
Oversizing the throttle body would drop the low end torque even further.
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Old 26th June 2008, 20:18   #80
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Originally Posted by Sankar View Post
Oversizing the throttle body would drop the low end torque even further.
Oh yeah?? Says who??
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Old 26th June 2008, 20:25   #81
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Oh yeah?? Says who??
Is my name hidden from your view?
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Old 26th June 2008, 21:13   #82
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Chill guys!! Both of you can give your respective POVs on your theories. No need to be rude here!!! In the process others can learn something as well.

Last edited by abhik : 26th June 2008 at 21:17.
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Old 26th June 2008, 23:22   #83
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How about a TB enlargement?
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Old 26th June 2008, 23:28   #84
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Quote:
Originally Posted by The Wolf View Post
Oh yeah?? Says who??
Wolf,
I have to agree with Sankar, he is right on with what he says about the throttle body (and every thing else that he has commented on).

Larger size is really for high engine speeds where the throttle diameter becomes a restrictive factor on maximum power. By the way, this is why all rally race specs. have a max allowable throttle body diameter specification.

Stock cars have small throttle bodies that are sized to give good air velocity at low rpm, thereby providing good low end throttle response and torque.

Another point to consider is the fact that some high performance engines actually use 2 sets of intake runners. Small diameter for low rpm with secondary large diameter ones for higher speeds.

Even older carberator engines use the same principal. I used to have a chevy with a 4 barrel carb., and the front two barrels were tiny little ones that gave good low rpm response, and then there were 2 huge secondary barrels that opened up for high engine speeds.

Regards,
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Old 27th June 2008, 00:19   #85
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i am guessing it has to do with velocity with a larger t.b the velocity decreases since it has more place to travel through
(like a water pipe when the hose is covered the water flows with more force but at less volume) but would benefit at higher rpm that is why i think ford rocam also suggested going with a smaller diameter near the t.b to possibly increase the low end torque.
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Old 27th June 2008, 01:39   #86
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yeah.. Finally gaurav. Somethin we both agree on bigger throttle body does not mean more torque necessarily
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Old 27th June 2008, 13:05   #87
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I am seconding Sankar on the TB issue.

Iceman: Looking forward to your baleno development.
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Old 27th June 2008, 13:07   #88
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I am seconding Sankar on the TB issue.

Iceman: Looking forward to your baleno development.
I too am totally with what sankar said.
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Old 27th June 2008, 15:57   #89
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An ECU would be your best bet. But personally, just let a high revving engine do what it's designed to do. It would be much easier to change your driving style. All it takes is one downshift!!!

Shan2nu
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Old 27th June 2008, 16:35   #90
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Originally Posted by Sankar View Post
It's the opposite that will happen. With a heavy flywheel the top end more or less remain the same but acceleration would definitely suffer. The heavy flywheel makes the cruising in top gear and top speed easier as the crank stores reserve energy and it's momentum keeps it going. Acceleration would increase with a light crank.
How about going for a lightened flywheel?

Please any one explain the effect of lightening the stock flywheel or replacing it with a lighter one.

raj.
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